Police officers combed a Vancouver eastside neighbourhood after an infant's body was found in April 2009. (Submitted by Pascal Marchand)

Police have returned to investigate an area of East Vancouver where an infant's body was found in a plastic bag last year.

Four homes on the 2500 block of Charles Street, where the body was found, were cordoned off by police tape as of noon Wednesday. A large number of officers were seen in the area, the curtains of homes were closed and police vehicles were parked outside.

Police have not yet said why they returned to the scene but have scheduled a news conference to update the media later Wednesday afternoon on a "homicide investigation."

On April 2, 2009, a person who lived on the street found the baby boy's body wrapped in a plastic bag in a yard between two houses.

At the time, police appealed to the mother of the infant, or anyone who might know her, to contact them. They later said they had contacted the mother and she was getting "the care she needs."